Append output of R CMD BATCH

Question

i have a for loop in a batch file which runs the same r script with different parameters and i want all output to be appended to the same file.

here is an example:

Batch Code

for %%i in ([folder name]) do (
  R CMD BATCH --slave "--args %%i" Script.R output.out
)

Script.R Code

cmdArgs = commandArgs(trailingOnly = TRUE)
cat("Args: ", cmdArgs[1], "\n")
cat("End")

I have tried using 2>&1 and it's not working.

I am using a windows machine and prefer not to redirect output from within the R script and can't user RScript, any ideas?

user6811411 · Accepted Answer · 2016-12-13 01:32:33Z

1

simply enclose all the output lines in the batch with additional parentheses and redirect that to a file:

(
for %%i in ([folder name]) do R CMD BATCH --slave "--args %%i" Script.R output.out
) >Output.txt

This [folder name] is only pseudo code and won't work.

answered Dec 13, 2016 at 1:32

user6811411

Sign up to request clarification or add additional context in comments.

1 Answer 1